| Code | Name | Region |
|---|---|---|
| GBDR3 | Drymen | STG |
| GBDDL | Dudley | DUD |
| GBDLH | Dudley Hill | BRD |
| GBDUF | Duffield | DBY |
| GBDMY | Dufftown | MRY |
| GBDQF | Dukinfield | TAM |
| GBDOT | Dorrington | SHR |
| GBDT2 | Dosthill | STS |
| GBDGL | Douglas | SLK |
| GBDOU | Doune | |
| GBDVR | Dover | KEN |
| GBDVQ | Dovercourt | ESS |
| GBDDG | Doveridge | DBY |
| GBDWA | Dowlais | MTY |
| GBDWD | Downend | IOW |
| GBDWM | Downham | CAM |
| GBDOW | Downham Market | NFK |
| GBDHS | Downhead | |
| GBDWK | Downpatrick | DOW |
| GBDWT | Downton | WIL |
| GBDEC | Draperstown | |
| GBDRX | Drax | NYK |
| GBDYT | Draycott | GLS |
| GBDEM | Drem | ELN |
| GBDRF | Driffield | ERY |
| GBDFI | Driffield | GLS |
| GBDKQ | Docking | NFK |
| GBDGH | Doddinghurst | ESS |
| GBDOG | Doddington | CAM |
| GBDWH | Dodworth | BNS |
| GBDOL | Dolgarrog | CWY |
| GBDLG | Dolgellau | GWN |
| GBDLR | Dollar | CLK |
| GBDOY | Dolwyddelan | CWY |
| GBDHD | Donaghadee | ARD |
| GBDNO | Donaghcloney | ARM |
| GBDGO | Donaghmore | |
| GBDON | Doncaster | DNC |
| GBDNG | Donnington | SHR |
| GBDNT | Doonfoot | SAY |
| GBDHR | Dorchester | DOR |
| GBDTR | Dorchester | OXF |
| GBDRD | Dordon | WAR |
| GBDOE | Dore | SHF |
| GBDKG | Dorking | SRY |
| GBDOC | Dornoch | HLD |
| GBDVP | Devonport | |
| GBDVS | Devonside | CLK |
| GBDWY | Dewsbury | KIR |
| GBDIB | Dibden | HAM |